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SPEAR1340 数据表(PDF) 147 Page - STMicroelectronics |
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SPEAR1340 数据表(HTML) 147 Page - STMicroelectronics |
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147 / 200 page ![]() SPEAr1340 Electrical characteristics Doc ID 023063 Rev 4 147/200 4.7 Required external components Some pads require the use of an external resistor. Table 56 lists these pads and the value of the resistors to be used. Table 56. List of required resistors Pad name Value Ball MIPHY0_REF 487 Ω (± 1%) R1 USB_TXRTUNE 43.2 Ω (± 1%) G1 DDRIO_COMP_REXT 332 Ω (± 1%) AD5 IO_COMP_REXT1_3V3 121 K Ω (± 1%) AC21 IO_COMP_REXT2_3V3 121 K Ω (± 1%) K19 IO_COMP_REXT1_1V8_3V3 121 K Ω (± 1%) K12 IO_COMP_REXT2_1V8_3V3 121 K Ω (± 1%) K15 IO_COMP_REXT_2V5_3V3 121 K Ω (± 1%) R19 |
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